import sys
input = sys.stdin.readline

N,M,L=map(int,input().split())
A=list(map(int,input().split()))

SET={L}

for a in A:
    NSET=set()

    for s in SET:
        NSET.add((s+a)//2)

    SET|=NSET

if M in SET:
    print("Yes")
else:
    print("No")